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Window Sash Repairs

Sashes for windows must be inspected regularly for signs of mold, mildew and other damage. By catching problems before they become serious, you can save money on repairs in the future.

The sash is an interior frame that is able to move upwards and downwards in windows that are open. This article will demonstrate how to do a variety of simple repairs to sash.

Weather Stripping

Wood window sashes provide the classic look to your home and, when properly maintained, can last for years. They may, however, get damaged or deteriorated over time due to exposure or normal wear. Sash repair specialists can restore windows to their original condition and maintain their appearance longer than replacement windows.

The first step to sash window repairs is addressing weather stripping, which can be found on both the sash and frame. It can cause drafts if it's worn out or loose. Start by identifying the window's brand and the glass manufacturer's date (etched on the corner of the glass or the aluminum spacers between panes). Then, take the sash off and mark its width and height to find replacement weather stripping to match.

Then, take it off and set it on a work surface so that you can reach all four sides. If your sash has a double glaze window repair-hung, you'll have to remove the weights and their ropes which should have slipped into the pocket that was intended to be in the jamb liner. After you have removed the sash using the utility knife, remove the weather stripping from the old sash by hand or with the putty blade.

After the sash is cleaned, you can replace the parting stops. These are long pieces that separate the sashes. Pam likes to replace them with standard 1/2-inch by 3/4-inch window trim from the lumberyard, but you could also use a piece of scrap wood.

After removing the stoppers for parting and trimming them to the desired length and thickness, apply a thin layer of glazing compound on the bottom of the sash. Smooth the compound with your putty knife and let it dry for at least a few days. Once the putty has fully cured and dried, you can apply a topcoat of acrylic. This will protect the putty and give your sash a fresh appearance.

Sash Hardware

The hardware that supports window sashes may wear out with time and use. This could lead to the window or door repairing that is difficult to open or close. The good thing is that fixing and replacing this hardware is usually very simple and cost-effective. If a sash isn't easy to operate you can try spraying some lubrication into the jamb channel, and then open it to see if this resolves the issue. If not, the issue is likely to be with the sash balance, and you'll need to take out the sash to gain access to the hardware.

Sashes for windows should be able to open and close without much effort. However, this may be difficult if weights are worn out or the sash-to rail connecting rail isn't coated. This problem could be caused by many factors that include an absence of maintenance or a mismatched weight rating.

If the hinge arms on the window begin to move, this could cause the sash to drag and then hit the frame in the opposite corner (Photo 1). To address this issue, first make sure the sash is firmly seated in the opening of the frame and then remove it from the window. If the sash has been screwed to the hinge arm, you'll have to loosen the hinge arm and replace it (Photo 2). Next, install the new sash (Photo 3).

Windows that are old, especially in older homes, can be difficult to open and close, due to sagging hinges and an overall inefficiency. In many instances, a few minor repairs can turn these windows into smooth operators for the first time and save the homeowner money on energy bills.

To complete these repairs to sash, it's important to have all of the necessary tools lined up before you begin. Start by marking the location of the hinge channel on the frame with pencil (Photo 1). This will allow you to get the channel back in the correct position after you've finished. Remove the sash and remove the hardware, including the parting beads (Photo 2) and the cords or chains that secure it. Heat gun with nozzle shield and a medium setting can soften any hardened putty. Take off the old sash and put it in a labeled bag.

Sash Weights

Whether your window sash repairs are to replace a damaged cord or to ensure that the windows are functional, replacing worn out weights for sash will improve its operation and reduce energy costs. Sash weights are made of heavy iron or lead cylinders that are enclosed inside a concealed cavity, and connected by ropes to the moveable window sash. They provide counterbalance, allowing the window to be opened and closed without the need for mechanical or electrical devices. The sash weights are often ignored or discarded by homeowners, and are turned into scrap when they fail. Consequently you may have to locate replacements.

A weight in a sash that has fallen out of the cavity is difficult to retrieve, so you will want to find a new one that is suitable for the. You will also require a new piece string, a length of sashcord and a few sashpulleys to secure the new weights to the cord.

Older wood windows are joined using mortise and tenon joints. Hammers and pins can be used to remove the wood pegs holding the components together. The majority of these pegs are big on one side and smaller on the other. It is essential to remove first the smaller diameter sides. Sashes made later in the century utilized glue instead of pegs. They can be separated by cutting the glue line with an instrument, and then tapping the mortised section loose with a mallet.

Once the sash is freed and removed, you can take off the sash stop and gain access to the weight pocket. This is usually done via an opening in the bottom of each jamb. This hole is covered by an access panel made of wood which can be removed to allow you to observe the inner workings of the frame.

After the sash has been stopped and the access panel is removed, you can take off the weight you used and replace it. Weigh the sash first to ensure that the weights you have might not be the correct size. After the new weight is in place, tie a string to it and then thread it through the sash pulley. Then, attach the string to your boxed frame. Leave a few inches at the head of the string for future adjustments.

Sash Cords

In the majority of double glazing window repair-hung windows, a cord or chain is attached to the weights. This supports and keeps the sashes in the jamb in a balanced manner. Over time these cords can break, making it impossible to raise the window. A new sash cable can restore the ability to move and lower the sash, and keep it in place when opened.

To replace sash cords the first step is to remove the access panels from the jambs. They are usually installed by screws or nails and must be removed or relocated. It may be possible to remove them using the hammer or chisel however, it is best to lay out dust sheets before starting any work.

Once the access panel is removed, you can start working on the sash. Utilize a flat bar or chisel to pull the tiny partsing beads out of their grooves. They are usually wedged in or nailed in, but they can be prised free, so it's worth taking your time. If the sash remains in place, break the mortise-and-tenon joints out with a hammer or screwdriver and then take out each wood peg. You should be able to move the sash around freely, though it might require lubrication if it feels stiff.

With the sash in an open position, measure enough sash cord/chain to extend from the pulley on the top of the jamb to the sash slot in the bottom. Cut the chain or cord and fix it as described in Step 6 above. You can use a hammer and screws or nails, however nails are less likely to cause damage.

If you don't have an upgrade kit to replace the old counterbalance system, it's best to keep the original weights for balancing in place. It's not too expensive to purchase them from architectural salvage stores and they'll be simple to install once you've got the sash open. Based on the dimensions and shape of your window you may require one or two sashweights to keep the sash open.